RuntimeError: Session is closed during scheduled coordinator refresh causes periodic entity drops to Unavailable #322

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1. bthanos commented on Nov 9, 2026

   

   bthanos

   on Nov 9, 2026

   Author

   More actions

   Proposed Fix
   In custom_components/generac/api.py, guard against closed sessions before calling self._session.get(), and catch RuntimeError("Session is closed") to transparently re-instantiate the session and retry the request:

   import aiohttp

   async def get_endpoint(self, endpoint: str):
   # Ensure the session exists and is active before initiating a request
   if self._session is None or self._session.closed:
   if hasattr(self, "_hass") and self._hass:
   from homeassistant.helpers.aiohttp_client import async_get_clientsession
   self._session = async_get_clientsession(self._hass)
   else:
   self._session = aiohttp.ClientSession()

   url = f"{self._base_url}{endpoint}"
   headers = self._get_headers()
   
   try:
       async with self._session.get(url, headers=headers) as response:
           if response.status == 401:
               await self.login()
               headers = self._get_headers()
               async with self._session.get(url, headers=headers) as retry_response:
                   return await retry_response.json()
           elif response.status >= 400:
               text = await response.text()
               raise IOError(f"API returned status code {response.status} for {endpoint}: {text}")
           return await response.json()
   except RuntimeError as ex:
       if "Session is closed" in str(ex):
           if hasattr(self, "_hass") and self._hass:
               from homeassistant.helpers.aiohttp_client import async_get_clientsession
               self._session = async_get_clientsession(self._hass)
           else:
               self._session = aiohttp.ClientSession()
           headers = self._get_headers()
           async with self._session.get(url, headers=headers) as retry_resp:
               return await retry_resp.json()
       raise